In the conference room of the Security Department of the National Space Center, Chang Shengzhi and Jiang Fuguo were observing the mysterious wooden box that Fan Fangsi handed over to Liu Peiqiang.

"What's this wooden box?" Chang Shengzhi looked at Liu Peiqiang and asked.

Liu Peiqiang replied, "I don't know either. The other party handed me this wooden box, and disappeared without a trace. ”

Speaking of which, Liu Peiqiang continued, "I tried to open it, but it failed, and the box couldn't be opened at all. ”

Chang Shengzhi immediately tried, and the wooden box, which looked boxy and less than ten centimeters long, could not be opened at all, as Liu Peiqiang explained.

"Old Jiang, can you try it?" Chang Shengzhi greeted.

Jiang Fuguo got started directly, he observed the wooden box while moving left and right, so as to try to find the way to open the wooden box.

However, Jiang Fuguo broke and studied for nearly five minutes, and the mysterious wooden box did not change.

"Chang, I remember that your space center has a materials research room, right?" Jiang Fuguo asked.

Chang Shengzhi asked rhetorically, "You mean, we sent it to the materials laboratory for inspection?" ”

"That's right!" Jiang Fuguo responded affirmatively, "You should have an ultrasonic flaw detector and an X-ray detector here, right?" ”

"Makes sense!" Chang Shengzhi directly understood what Jiang Fuguo meant.

The conventional purpose of an ultrasonic flaw detector is to inspect the internal cracks of the metal, through which it can find the opening and closing of the box and thus analyze how the box should be opened.

An X-ray detector can detect what's inside the box.

In the materials research room of the space center, Chang Shengzhi instructed, "Deng Boguang, stop all your work first, and let the personnel below the fifth level clearance leave the scene." ”

Deng Boguang is the person in charge of the materials research laboratory, and when he heard Chang Shengzhi's order, his face changed slightly, and then he immediately followed Chang Shengzhi's instructions.

After a while, there were only two people left in the materials research room except Deng Boguang, and Deng Boguang took the initiative to introduce, "Minister Chang, this one is Master Song Shuo, an old man in our room, with a fifth-level authority, and 37 years of service. ”

"This one is Master Tang Zhengtang, who is also an old man in the room, with 36 years of service, and his authority is one level higher." Deng Boguang introduced the situation.

Chang Shengzhi explained the situation to Song Shuo and Tang Zheng, and then explained, "Master Song, Master Tang, we need to check this box now, can you do it?" ”

Song Shuo responded affirmatively, "It's just a small thing!" ”

Tang Zheng seconded, "We can start right away." ”

Chang Shengzhi beckoned, "Xiao Liu, give the wooden box to the two masters to see the situation." ”

Liu Peiqiang handed over the wooden box, Song Shuo took it first, and he immediately fumbled for it, but like Chang Shengzhi and Jiang Fuguo, he didn't find any problems at all.

Tang Zheng reminded on the side, "Old Song, I'm ready here, let's check it with an X-ray first." ”

"Hmm." Song Shuo put the wooden box into the detection area of the X-ray detector, and Tang Zheng immediately began to operate the X-ray detector.

However, less than a minute later, Song Shuo said in surprise, "Old Tang, is our X-ray detector broken?" ”

Tang was observing the X-ray detector's inspection area, and he responded, "Impossible, right? What happened? ”

"I don't see the images from the X-ray detector." Song Shuo explained.

Tang Zheng walked over to check it, and as Song Shuo said, the X-ray detector did not return any images.

"Is it really broken?" Tang Zheng said to himself, he stopped the X-ray detector, and then stuffed a paper clip into a book, and then put this book into the detection area of the X-ray detector.

Less than a minute later, the X-ray detector detected the paperclip in the book, and the X-ray image was completely displayed, and the paperclip was clearly displayed.

Song Shuo and Tang Zheng glanced at each other, and Song Shuo took a step ahead and said, "Let's do it again!" ”

Tang Zheng nodded affirmatively, he watched Song Shuo take out the book with the paper clip hidden, he solemnly put the mysterious wooden box inside, and reminded, "Old Song, you check the location to see if it is in the detection area." ”

Song Shuo checked it three times before he responded affirmatively, "It's 100% in the detection area." ”

Tang Zheng nodded, and then turned on the X-ray detector again.

This time, however, the situation was exactly the same as before, as if the X-ray detector had malfunctioned, and no image information was returned at all.

"This" Tang Zheng looked at Song Shuo suspiciously, just in time to meet Song Shuo's puzzled gaze.

"Old Tang, let's try an ultrasonic flaw detector?" Song Shuo proposed.

"Okay!" Tang Zheng responded.

The two began to use ultrasonic flaw detectors to detect the mysterious wooden box again, but the result, like the X-ray detector, the ultrasonic flaw detector could not detect the existence of the mysterious wooden box at all.

Tang was walking towards Song Shuo, and he lowered his voice and said, "There is something wrong with this wooden box. ”

Song Shuo also lowered his voice, "There is indeed a problem. ”

"I'll report it!" Tang Zheng took a deep breath, he looked at Chang Shengzhi and Jiang Fuguo waiting outside the testing room, as well as Deng Boguang, and the agents of the Beijing Security Investigation Bureau who blocked the corridor, he had realized that this wooden box might involve a big secret.

"Director Deng, the test has been completed here, because the situation is a little special, can you come in so that we can explain." Tang Zheng explained.

Deng Boguang was just about to scold two sentences, but Chang Shengzhi agreed instead of Deng Boguang.

Chang Shengzhi walked into the testing room first, and he asked directly, "Master Tang, how is the situation, what is in that wooden box, have you found a way to open it?" ”

Tang Zheng replied negatively, "I'm sorry, Minister Chang, we have encountered some trouble. ”

"Oh?" Chang Shengzhi looked at Tang Zheng suspiciously, "Tell me in detail." ”

Tang Zheng hesitated a little before responding, "There is something wrong with this wooden box." On the surface, it's just a beautifully carved wooden box, maybe there is some special design, but it's an ordinary wooden box after all, right? ”

Before Chang Shengzhi and Jiang Fuguo asked, Tang Zheng continued, "However, it actually has a big problem! Neither X-ray detectors nor ultrasonic flaw detectors can detect its existence. ”

"Old Song, you immediately demonstrate it with an ultrasonic flaw detector." Tang Zheng beckoned.

Song Shuo immediately used an ultrasonic flaw detector to inspect the mysterious wooden box.

Tang Zhengjie said, "You pay attention, the ultrasonic flaw detector is working normally, but it did not detect the existence of that wooden box, as if the wooden box was a ball of air, and the ultrasonic flaw detector passed directly through it." The case is the same with X-ray detectors, where it is impossible to detect its presence at all. ”

"Simply put, it's a wooden box that doesn't exist!" Tang Zheng made a conclusion.

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